/*
 * Copyright 2006-2008 Michele Mostarda ( michele.mostarda@gmail.com ).
 * All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the 'License');
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an 'AS IS' BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.graphnav.swing.event;

import java.util.EventListener;

/**
 * Defines a {@link org.graphnav.swing.event.GraphPanelListener}
 */
public interface GraphPanelListener extends EventListener {

    /**
     * Notifies that a <i>node</i> is selected.
     * @param gpe
     */
    public void nodesSelected(GraphPanelEvent gpe);

    /**
     * Notifies that a <i>node</i> is deselected.
     *
     * @param gpe
     */
    public void nodesDeselected(GraphPanelEvent gpe);

    /**
     * Notifies that a <i>node</i> is moved.
     *
     * @param gpe
     */
    public void nodesMoved(GraphPanelEvent gpe);

    /**
     * Notifies that a <i>node</i> is overlapped by another node.
     *
     * @param gpe
     */
    public void nodesOverlapped(GraphPanelEvent gpe);

    /**
     * Notifies that a <i>node</i> has been collapsed.
     *
     * @param gpe
     */
    public void nodeCollapsed(GraphPanelEvent gpe);

    /**
     * Notifies that a <i>node</i> has been expanded.
     * @param gpe
     */
    public void nodeExpanded(GraphPanelEvent gpe);

    /**
     * Notifies that the <i>canvas panel</i> has been resized.
     * @param gpe
     */
    public void panelResized(GraphPanelEvent gpe);
}
